CN112881857B - Real-time sensing power grid fault prevention system and method - Google Patents
Real-time sensing power grid fault prevention system and method Download PDFInfo
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- CN112881857B CN112881857B CN202110031697.9A CN202110031697A CN112881857B CN 112881857 B CN112881857 B CN 112881857B CN 202110031697 A CN202110031697 A CN 202110031697A CN 112881857 B CN112881857 B CN 112881857B
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- 238000004146 energy storage Methods 0.000 claims abstract description 52
- 238000010248 power generation Methods 0.000 claims abstract description 37
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- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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Abstract
The invention discloses a real-time perceived power grid fault prevention system and a method, comprising the following steps: acquiring a first real-time wind speed at a current time point in a wind power generation area through wind power detection equipment; acquiring a first wind speed change interval in a first preset time period after a current time point; acquiring a wind speed fluctuation interval in the first preset time period according to the first wind speed change interval and the first real-time wind speed; judging whether the wind speed fluctuation interval is positioned in a safe preset interval or not; when the wind speed fluctuation interval is positioned in the safety preset interval, the power grid works normally; when the wind speed fluctuation interval exceeds the safety preset interval, starting energy storage equipment so that the energy storage equipment assists the power grid to stabilize voltage; and a real-time perceived grid fault prevention system. According to the technical scheme provided by the invention, the energy storage equipment can timely stabilize the voltage of the power grid according to the change of the wind speed, so that the overload work of the power grid caused by the large change of the wind speed is avoided, and the power grid can normally operate.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a real-time sensing power grid fault prevention system and method.
Background
The whole of the power substation and the power transmission and distribution line of various voltages in the power system is called a power grid. The power transformation, transmission and distribution system comprises three units. The task of the grid is to deliver and distribute electrical energy, changing the voltage.
Wind speeds tend to exhibit strong fluctuations and intermittent characteristics.
With the continuous development of power systems, the demand of people for electric energy is continuously increased, and the installed capacity of new wave energy sources such as wind, light and the like is increasingly increased. The wind power generation mode has the advantages of cleanness, reproducibility and the like, has important significance for developing resource-saving and environment-friendly society in China, and meanwhile, has obvious fluctuation and intermittence due to the influence of factors such as climate, environment and the like, so that the current wind power generation electrode is easy to cause voltage fluctuation of a power grid, and the power grid is easy to break down due to larger voltage fluctuation.
Disclosure of Invention
The invention mainly aims to provide a real-time perceived power grid fault prevention system and method, and aims to solve the problem that unstable wind power generation is easy to cause power grid faults.
In order to achieve the above purpose, the method for preventing the power grid fault by real-time sensing provided by the invention comprises the following steps:
acquiring a first real-time wind speed at a current time point in a wind power generation area through wind power detection equipment;
acquiring a first wind speed change interval in a first preset time period after a current time point;
acquiring a wind speed fluctuation interval in the first preset time period according to the first wind speed change interval and the first real-time wind speed;
judging whether the wind speed fluctuation interval is positioned in a safe preset interval or not;
when the wind speed fluctuation interval is positioned in the safety preset interval, the power grid works normally;
when the wind speed fluctuation interval exceeds the safety preset interval, the energy storage equipment is started, so that the energy storage equipment assists the power grid to stabilize voltage.
Preferably, when the wind speed fluctuation interval is within the safety preset interval, the step of normal operation of the power grid further includes:
acquiring each early warning area, and respectively acquiring a second real-time wind speed at the current time point in each early warning area through the wind power detection equipment;
judging whether the difference value of each second real-time wind speed and each first real-time wind speed exceeds the safety preset interval;
when the wind speed difference value does not exceed the safety preset interval, the power grid works normally;
and when the wind speed difference exceeds the safety preset interval, entering an alert state.
Preferably, when the wind speed difference exceeds the safety preset interval, the method enters a warning state and further comprises the following steps:
when the wind speed difference value exceeds a safety preset interval, judging whether each second real-time wind speed exceeds the first wind speed change interval;
when each second real-time wind speed in the second preset time period does not exceed the first wind speed change interval, the power grid works normally;
and when any one of the second real-time wind speeds exceeds the first wind speed change interval within the second preset time period, starting the energy storage equipment.
Preferably, the step of starting the energy storage device when any one of the second real-time wind speeds exceeds the first wind speed variation interval within the second preset time period further includes:
acquiring a third real-time wind speed of the current time in a detection area according to each early warning area of which the wind speed difference exceeds the safety preset interval, wherein the detection area is a crowd gathering place in which the wind speed difference exceeds the early warning area of which the safety preset interval is nearest to the direction of deviating from the wind power generation area;
acquiring a second wind speed change interval of a third preset time period before the current time in the detection area;
judging whether the third real-time wind speed is positioned in the second wind speed change interval;
when the third real-time wind speed is located in the second wind speed change interval, closing the energy storage equipment;
and when the third real-time wind speed exceeds the second wind speed change interval, continuing to start the energy storage equipment.
Preferably, each of the early warning areas is disposed around the wind power generation area.
Preferably, when the wind speed fluctuation interval exceeds the safety preset interval, the step of starting the energy storage device to enable the energy storage device to assist the power grid to stabilize the voltage comprises the following steps:
when the wind speed fluctuation interval exceeds the safety preset interval, dividing the first preset time period into a plurality of stable time periods and at least one fluctuation time period;
when the real-time is within any one of the stable time periods, the power grid works normally;
and when the real-time is within any fluctuation time period, starting the energy storage equipment so that the energy storage equipment assists the power grid to stabilize voltage.
Preferably, the step of starting the energy storage device when the real-time is within any one of the fluctuation time periods, so that the energy storage device assists the power grid to stabilize the voltage, includes:
when the real-time is in any fluctuation time period and the first wind speed change interval is in an ascending trend, the power grid discharges to the energy storage equipment so as to enable the power grid voltage to be stable;
and when the real-time is positioned in any fluctuation time period and the first wind speed change interval is in a descending trend, the energy storage equipment discharges to the power grid so as to enable the power grid voltage to be stable.
Preferably, the energy storage device comprises at least one of a battery or pumped-hydro energy storage device.
In order to achieve the above purpose, the invention also provides a real-time perceived power grid fault prevention system, and the real-time perceived power grid fault prevention method is applied.
According to the technical scheme, the wind power detection equipment acquires the real-time wind speed of the wind power generation area in real time, and controls the use of the energy storage equipment according to the real-time wind speed, so that the energy storage equipment can smooth the voltage of the power grid according to the change of the wind speed in time, overload work of the power grid due to large change of the wind speed is avoided, and normal operation of the power grid is ensured.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a first embodiment of a method for real-time aware grid fault prevention according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
As shown in fig. 1, to achieve the above objective, a method for preventing a power grid fault by sensing in real time includes the following steps:
step S10, acquiring a first real-time wind speed at a current time point in a wind power generation area through wind power detection equipment;
step S20, a first wind speed change interval in a first preset time period after a current time point is obtained;
step S30, acquiring a wind speed fluctuation interval in a first preset time period according to a first wind speed change interval and a first real-time wind speed;
step S40, judging whether the wind speed fluctuation interval is positioned in a safe preset interval or not;
step S50, when the wind speed fluctuation interval is positioned in the safety preset interval, the power grid works normally;
and step S60, when the wind speed fluctuation interval exceeds the safety preset interval, the energy storage equipment is started so as to enable the energy storage equipment to assist the power grid to stabilize the voltage.
In particular, the first preset time period may be 12 hours, which may facilitate the scheduling of a smooth grid voltage operation.
Specifically, the first wind speed change interval is a local wind power change, and can be obtained through a network channel or directly obtained from a meteorological office channel. Acquiring from a network channel, specifically, acquiring meteorological data from each large meteorological website through computer networking, and acquiring a first wind speed change interval according to the acquired meteorological data; the obtaining from the weather bureau channel may specifically be sending a weather information obtaining request to an information obtaining port of the local weather bureau, and obtaining the first wind speed change interval according to the weather information sent by the information obtaining port. In order to ensure the acquisition speed and accuracy of the first wind speed change interval, the weather information can be acquired through the network channel and the weather office channel at the same time, and when the weather information of the network channel and the weather information of the weather office channel are different, the weather information which is coached by the weather office is taken as the reference.
Specifically, the wind power detection equipment comprises fixed detection equipment and movable detection equipment, wherein the fixed detection equipment comprises a first controller, a first communication unit, a storage barrel, a first detection main body and a lifter, and the first controller is respectively and electrically connected with the first communication unit, the first detection main body and the lifter; the storage barrel is used for being buried underground; the lifter is arranged in the storage barrel and is used for driving the first detection main body to leave or enter the storage barrel; the first detection main body is used for detecting the real-time wind speed at a fixed position in the wind power generation area to obtain first detection data and sending the first detection data to the first controller; the first controller is used for controlling the lifter to lower the first detection main body into the storage barrel according to the first detection data, so that the first detection main body is prevented from being damaged due to strong wind; the first controller is also used for sending the first detection data sent by the first detection main body to the control center through the first communication unit.
The mobile detection equipment comprises a mobile vehicle, a second controller, a second communication unit and a second detection main body, wherein the second controller, the second communication unit and the second detection main body are respectively arranged on the mobile vehicle, the second controller is respectively electrically connected with the second communication unit, the second detection main body and the mobile vehicle, and the second detection main body is used for detecting the real-time wind speed of a patrol route in a wind power generation area to obtain second detection data and transmitting the detection data to the second controller; the mobile vehicle is used for patrol along a preset patrol route in the wind power generation area so that the second detection main body detects real-time wind speeds at all positions in the wind power generation area; the second controller is used for sending second detection data sent by the second detection main body to the control center through the second communication unit. The wind power detection equipment comprises fixed detection equipment and mobile detection equipment, so that the wind power detection equipment can acquire real-time wind speed at multiple points in a wind power generation area, and the accuracy of real-time wind speed data is ensured.
Specifically, a plurality of safety houses are arranged along the preset patrol route, and when the real-time wind speed of the patrol route detected by the second detection main body is greater than the safety wind speed, the controller controls the mobile vehicle to enter the safety house closest to the safety house, so that the damage of the mobile detection equipment caused by high wind is avoided. The energy charging point is arranged in the safety house, so that the energy charging can be carried out in the safety house when the movable detection equipment can keep away wind, meanwhile, the safety house can be used as an overhaul point for storage and maintenance work, so that the movable detection equipment can be used by overhaul personnel at the same time, because the wind power generation area is large in general occupied area, the maintenance of the wind power generation equipment by the overhaul personnel can be facilitated due to the fact that the safety house is used by the overhaul personnel, the functions of the safety house are diversified, and the utilization rate of the safety house is improved.
According to the technical scheme, the wind power detection equipment acquires the real-time wind speed of the wind power generation area in real time, and controls the use of the energy storage equipment according to the real-time wind speed, so that the energy storage equipment can smooth the voltage of the power grid according to the change of the wind speed in time, overload work of the power grid due to large change of the wind speed is avoided, and normal operation of the power grid is ensured.
Based on the first embodiment of the method for preventing power grid faults by sensing in real time, in the second embodiment of the present invention, step S50 further includes:
step S70, acquiring each early warning area, and respectively acquiring a second real-time wind speed at the current time point in each early warning area through wind power detection equipment;
step S80, judging whether the difference value between each second real-time wind speed and each first real-time wind speed exceeds a safe preset interval;
step S90, when the wind speed difference value does not exceed a safety preset interval, the power grid works normally;
and S100, when the wind speed difference value exceeds a safety preset interval, entering an alert state.
The warning area is used for detecting whether the wind speed outside the wind power generation area changes, the early warning area obtains a second real-time wind speed, and then the second real-time wind speed and the first real-time wind speed are compared to judge whether a sign of wind speed change exists.
Specifically, the wind speed difference value is a difference value obtained by subtracting the second real-time wind speed from the first real-time wind speed, and when the wind speed difference value exceeds a safe preset interval, the wind speed is about to change or an error exists in the first real-time wind speed.
Specifically, each early warning area is located outside the wind power generation area respectively, and each early warning area is at least one kilometer away from the wind power generation area respectively, so that the detection range of the first real-time wind speed can be enlarged, and wind power data can be acquired in more detail.
Based on the second embodiment of the method for preventing grid faults according to the present invention, in a third embodiment of the present invention, step S100 includes:
step S101, judging whether each second real-time wind speed exceeds a first wind speed change interval when the wind speed difference exceeds a safety preset interval;
step S102, when each second real-time wind speed in the second preset time period does not exceed the first wind speed change interval, the power grid works normally;
step S103, when any second real-time wind speed exceeds the first wind speed change interval within a second preset time period, starting the energy storage equipment.
After the warning state is entered, judging whether the second real-time wind speed exceeds the first wind speed change interval, and after the second real-time wind speed exceeds the first wind speed change interval, proving that errors possibly occur in the first wind speed change interval, and starting energy storage equipment to prepare for large changes in power grid voltage.
Based on the third embodiment of the method for preventing grid faults according to the present invention, in a fourth embodiment of the present invention, step S103 includes:
step S104, obtaining a third real-time wind speed of the current time in a detection area according to each early warning area of which the wind speed difference exceeds the safety preset interval, wherein the detection area is a crowd gathering place in which the early warning area of which the wind speed difference exceeds the safety preset interval is nearest to the direction of the wind power generation area;
step S105, a second wind speed change interval of a third preset time period before the current time in the detection area is obtained;
step S106, judging whether the third real-time wind speed is in the second wind speed change interval;
step S107, when the third real-time wind speed is located in the second wind speed change interval, the energy storage device is closed;
and S108, when the third real-time wind speed exceeds the second wind speed change interval, starting the energy storage equipment continuously.
The detection area is a town, a country or a city close to the power generation area, the wind power generation area is generally far away from the people gathering place, and whether severe weather changes occur can be judged to influence the normal work of the wind power generation area by acquiring a second wind speed change interval of the detection area.
Specifically, step S108 further includes:
step S109, requesting to related departments to acquire the latest real-time wind power grade forecast of the wind power generation area at the current time point;
step S110, comparing the real-time wind power level forecast with a first real-time wind speed;
step S111, when the real-time wind power level forecast and the first real-time wind speed are inconsistent, an alarm is sent to a related department to remind the area of abnormal weather;
and step S112, when the real-time wind power level forecast accords with the first real-time wind speed, determining a new power grid fault prevention scheme according to the real-time wind power level forecast.
Specifically, step S111 includes:
and S112, when the real-time wind power level forecast and the first real-time wind speed are inconsistent, discharging the actual meteorological image between the detection area and the early warning area obtained by the unmanned aerial vehicle, and simultaneously sending the meteorological image and the alarm to a related department to send the alarm to remind the area of abnormal meteorological.
The actual image between the early warning area and the detection area is acquired through the unmanned aerial vehicle so as to prevent extreme weather (such as tornado, etc.), and relevant departments are informed to timely process the images.
Each early warning area is arranged around the wind power generation area. Specifically, each early warning area can enclose a circle around the periphery of the wind power generation area so as to obtain second real-time wind speeds in all directions around the periphery of the wind power generation area.
Specifically, step S70 includes:
step S71, obtaining the wind direction of a first real-time wind speed through wind power detection equipment;
step S72, determining an early warning area positioned in the corresponding direction of the wind power generation area according to the wind direction of the first real-time wind speed; (for example, the wind direction of the first real-time wind speed is east wind, and the early warning area corresponding to the direction is the early warning area positioned in the eastern direction of the wind power generation area)
Step S73, obtaining second real-time wind speeds of the current time points in all the early warning areas in the corresponding directions through wind power detection equipment.
And determining an early warning area required to acquire the second real-time wind speed according to the wind direction of the first real-time wind speed, so that the operation load of the operation data reduction control center can be reduced.
Specifically, each early warning area is set according to the past year weather record information of the wind power generation area (for example, the wind power generation area is the northeast wind throughout the year, and after the early warning areas are set in the east, west, south and north of the wind power generation area, the early warning areas are also set in the northeast of the wind power generation area), so that the wind direction state can be conveniently, quickly and in detail obtained.
Based on the first to fourth embodiments of the real-time aware grid fault prevention method according to the present invention, in a fifth embodiment of the present invention, step S60 includes:
step S61, when the wind speed fluctuation interval exceeds the safety preset interval, dividing the first preset time period into a plurality of stable time periods and at least one fluctuation time period;
step S62, when the real-time is in any stable time period, the power grid works normally;
step S63, when the real-time is within any fluctuation time period, the energy storage device is started so that the energy storage device assists the power grid to stabilize the voltage.
The first preset time period is divided into the stable time period and the fluctuation time period, so that the control of the energy storage equipment is more refined, and the power grid operation is ensured to be smoother.
Based on the fifth embodiment of the method for preventing grid faults according to the present invention, in a sixth embodiment of the present invention, step S63 includes:
step S64, when the real-time is in any fluctuation time period and the first wind speed change interval is in an ascending trend, the power grid discharges to the energy storage device so as to enable the power grid voltage to be stable;
step S65, when the real-time is in any fluctuation time period and the first wind speed change interval is in a descending trend, the energy storage device discharges to the power grid so as to enable the power grid voltage to be stable.
The energy storage device includes at least one of a battery or pumped-hydro energy storage device.
A real-time perceived power grid fault prevention system applies the real-time perceived power grid fault prevention method according to the embodiment.
The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather utilizing equivalent structural changes made in the present invention description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (9)
1. A method for real-time perceived grid fault prevention, comprising the steps of:
acquiring a first real-time wind speed at a current time point in a wind power generation area through wind power detection equipment;
acquiring a first wind speed change interval in a first preset time period after a current time point, wherein the first wind speed change interval is local wind power change;
acquiring a wind speed fluctuation interval in the first preset time period according to the first wind speed change interval and the first real-time wind speed;
judging whether the wind speed fluctuation interval is positioned in a safe preset interval or not;
when the wind speed fluctuation interval is positioned in the safety preset interval, the power grid works normally;
when the wind speed fluctuation interval exceeds the safety preset interval, the energy storage equipment is started, so that the energy storage equipment assists the power grid to stabilize voltage.
2. The method for preventing a power grid fault perceived in real time according to claim 1, wherein the step of normally operating the power grid when the wind speed fluctuation interval is within a safe preset interval, further comprises:
acquiring each early warning area, and respectively acquiring a second real-time wind speed at the current time point in each early warning area through the wind power detection equipment;
judging whether the difference value of each second real-time wind speed and each first real-time wind speed exceeds the safety preset interval;
when the wind speed difference value does not exceed the safety preset interval, the power grid works normally;
and when the wind speed difference exceeds the safety preset interval, entering an alert state.
3. The method for preventing a real-time perceived power grid fault according to claim 2, wherein the arming is performed when the wind speed difference exceeds the safety preset interval, further comprising:
when the wind speed difference value exceeds a safety preset interval, judging whether each second real-time wind speed exceeds the first wind speed change interval;
when each second real-time wind speed in the second preset time period does not exceed the first wind speed change interval, the power grid works normally;
and when any one of the second real-time wind speeds exceeds the first wind speed change interval within the second preset time period, starting the energy storage equipment.
4. A method of grid fault prevention as claimed in claim 3, wherein the step of activating the energy storage device when any one of the second real-time wind speeds exceeds the first wind speed variation interval within the second preset time period further comprises:
acquiring a third real-time wind speed of the current time in a detection area according to each early warning area of which the wind speed difference exceeds the safety preset interval, wherein the detection area is a crowd gathering place in which the wind speed difference exceeds the early warning area of which the safety preset interval is nearest to the direction of deviating from the wind power generation area;
acquiring a second wind speed change interval of a third preset time period before the current time in the detection area;
judging whether the third real-time wind speed is positioned in the second wind speed change interval;
when the third real-time wind speed is located in the second wind speed change interval, closing the energy storage equipment;
and when the third real-time wind speed exceeds the second wind speed change interval, continuing to start the energy storage equipment.
5. The real-time aware grid fault prevention method of claim 2, wherein each of the pre-warning areas is disposed around the wind power generation area.
6. The method for preventing a power grid fault perceived in real time according to any one of claims 1 to 5, wherein the step of starting the energy storage device to make the energy storage device assist in stabilizing the power grid voltage when the wind speed fluctuation interval exceeds the safety preset interval comprises:
when the wind speed fluctuation interval exceeds the safety preset interval, dividing the first preset time period into a plurality of stable time periods and at least one fluctuation time period;
when the real-time is within any one of the stable time periods, the power grid works normally;
and when the real-time is within any fluctuation time period, starting the energy storage equipment so that the energy storage equipment assists the power grid to stabilize voltage.
7. The method of claim 6, wherein the step of enabling the energy storage device to assist the energy storage device in smoothing the grid voltage when the real time is within any of the fluctuating time periods comprises:
when the real-time is in any fluctuation time period and the first wind speed change interval is in an ascending trend, the power grid discharges to the energy storage equipment so as to enable the power grid voltage to be stable;
and when the real-time is positioned in any fluctuation time period and the first wind speed change interval is in a descending trend, the energy storage equipment discharges to the power grid so as to enable the power grid voltage to be stable.
8. The method of any one of claims 1-5, wherein the energy storage device comprises at least one of a battery or pumped-hydro energy storage device.
9. A real-time perceived grid fault prevention system, characterized by applying the real-time perceived grid fault prevention method according to any one of claims 1 to 8.
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| US7342323B2 (en) * | 2005-09-30 | 2008-03-11 | General Electric Company | System and method for upwind speed based control of a wind turbine |
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| CN105781884B (en) * | 2016-03-15 | 2018-05-11 | 河海大学 | A kind of Power Output for Wind Power Field smooth control method based on wind turbine Optimum Regulation |
| CN107154648B (en) * | 2017-06-09 | 2019-10-18 | 南京理工大学 | A kind of wind power plant bilayer has distribution of work control method |
| CN107959304B (en) * | 2017-12-06 | 2021-11-02 | 国网山东省电力公司济南供电公司 | Wind power plant virtual inertia improving method based on wind-storage cooperative operation |
| CN108183510B (en) * | 2018-01-30 | 2019-08-30 | 重庆大学 | Double-fed wind power system reactive power Active Control Method towards fluctuations in wind speed |
| CN111555325A (en) * | 2020-05-14 | 2020-08-18 | 华翔翔能科技股份有限公司 | Mixed type microgrid power generation and energy storage system |
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Denomination of invention: A real-time perception power grid fault prevention system and method Effective date of registration: 20231106 Granted publication date: 20230505 Pledgee: China Co. truction Bank Corp Yiyang branch Pledgor: Huaxiang XiangNeng Technology Co.,Ltd. Registration number: Y2023980063452 |